| 摘要 |
A markup language document (e.g. an XML document) may contain a first instan ce of a markup language element having an attribute with a first, platform-independe nt value, a second instance of the element having the attribute with a second, platform- specific value, and an indicator that the second value overrides the first. Executable code may replace both of the first and second instances with a single instance having the attribute with the second value. Alternatively the markup language document may contain a first instance of a markup language element having a first, platform-independent attribute, a second instance of the element having a second, platform-specific attribute differe nt from the first attribute, and an indicator that the second instance extends the first. In this case executable code may replace both instances of the markup language element wi th a single instance having the first attribute and the second attribute.
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